fractional extraction是什么意思

用法例句

Determination of carbamazepine in human plasma concentration by HPLC with single step;

单步萃取-HPLC法测定人血清中卡马西平浓度

The fractional extraction on Longkou lignite by different solvent was used for the studying of the occurrence modes and the variations of small molecular phases in coal.

研究煤萃取后的小分子相的赋存方式及其变化规律,用不同溶剂对龙口褐煤进行了分级萃取。

Group separation of soluble organic compounds in wheat stalk can be achieved by fractional extraction.

采用二硫化碳、苯、甲醇、丙酮和四氢呋喃对未氧化和氧化的麦秆进行分级萃取,比较麦秆各级萃取物的相对含量和组成差异,并对各级萃取物的组成进行GC/MS分析。

Separation of amino acids by aqueous surfactants two-phase extraction;

表面活性剂双水相萃取分离氨基酸研究

Extraction Separation and Determination of Ruthenium in Ethanol-salt-water-5-Br-PADAP System;

乙醇-盐-水-5-Br-PADAP体系中萃取分离测定钌

Application of ionic liquids in extraction separation including solid-solid separation of sodium sulphate and taurine,separation of benzene,toluene,ethylbenzene and xylene from coating material and the recovery of nuclear waste using solid-liquid separation,separation of rare metal using monoazo substituted crow ether as ionic liquids,and desulfurization of.

简要介绍了离子液体的合成方法、表征方法及离子液体对高分子材料的溶解性和降解性;详细介绍了离子液体在萃取分离中的应用,包括硫酸钠和牛磺酸的固-固分离,涂料中苯、甲苯、乙苯、二甲苯分离和核废料回收的固-液分离,单偶氮取代的冠醚离子液体对稀有金属的分离及汽油脱硫等液-液萃取分离,离子液体与超临界CO2结合的萃取分离等。

In the design,height of water column is increased and steam-water separation process of diluted acid from the water washing system is improved,which brings into full play the extraction and separation ability of water washing column,meets the requirement of production and reduces the cost.

本文论述了12000t/年HCFC-22工程水洗系统的完善设计,加高了水洗塔的高度,改进了水洗系统产生的稀酸在进行气液分离过程的生产工艺,使水洗塔的萃取分离能力充分发挥出来,满足生产要求,降低成本,同时减少了由于稀酸在气液分离过程中的不合理工艺而造成的环境污染。

The status of process analysis for RE extraction and separation in china is introduced.

简介了我国稀土萃取分离过程分析的现状 ,对稀土分离生产线实现在线分析与自动化控制有一定的参考价

A two-phase system of n-propyl alcohol and water containing iodide and ethyl violet was used for the extraction and separation of Cd2+ complexes in electroplating wastewater,based on the complexing reaction between Cd2+ and iodide and ethyl violet in the presence of(NH4)2SO4.

利用Cd(Ⅱ)与乙基紫(EV)、KI缔合后,加入盐析剂丙醇-水双水相体系萃取分离镉。

Supercritical CO_2 Extraction of Volatile Oil and α-Sanshool from Zanthoxylum bungeanum

超临界CO_2分步萃取花椒香气和麻味物质的初步研究

Study on the cloud-point extraction of effective components from Salvia miltiorrhiza assisted by ultrasonic

超声-浊点萃取丹参有效成分的初步研究

extraction fractionation

提取分级（分离），萃取分级

New Type Aqueous Two-phase Liquid-liquid Equilibrium and the Study on Extracting Salt Glycyrrhizanate;

新型双水相的液液相平衡及其萃取分离甘草酸盐初步探讨

Choosing the best solid phase micro-extraction fiber to extract wine aroma compounds

葡萄酒香气成分萃取中固相微萃取纤维的选择

Establishment of hepatocyte extraction combined with HPLC(HE-HPLC) and application in analysis of active components in the fruits of Gardenia jasminoides extract

肝细胞萃取-HPLC分析法的建立及其在栀子保肝效应物质初步分析中的应用

Learn how to" work up" your reaction using a separatory funnel to perform a liquid-liquid extraction.

藉由分液漏斗示範液相-液相萃取并学习如何用”反应检查步骤”检查你的反应。

Learn how to "work up" your reaction using a separatory funnel to perform a liquid-liquid extraction.

藉由分液漏斗示范液相-液相萃取并学习如何用”反应检查步骤”检查你的反应。

The Study of Solid Phase Extraction and Solid Phase Microextraction Technique in Important Tobacco Components Analysis;

固相萃取和固相微萃取在烟草重要化学成分分析中的应用研究

Comparison between Simultaneous Distillation-Extraction Method and Head Space-Solid Phase Micro-extraction Method for GC-MS Analysis of Volatile Components in Douchi

同时蒸馏萃取与顶空固相微萃取法分析豆豉挥发性成分

GC-MS Analysis of the Extractant from Fructus Cnidii Using Supercritical CO_2 Fluid Extraction;

蛇床子超临界CO_2萃取成分GC-MS分析

Study on Volatile Oil Components from Trapa manshurica Fler Kernel by Supercritical Carbon Dioxide Extraction and Gas Chromatography-Mass Spectrometry

超临界萃取菱仁挥发成分及气质分析

Extractive separation and GC/MS analysis of alkanes from Lingwu coal

灵武煤中烷烃的萃取分离和GC/MS分析

GC-MS Analysis of Extracts from Zanthoxylum bungeanun Maxim by Supercritical Carbon Dioxide Extraction

花椒超临界CO_2萃取物成分GC-MS分析

Extraction of Functional Components from Royal Jelly Waste and Composition Analysis on the extract

王浆渣中有效成分萃取及分析的研究

The Application of Molecular Distillation on the Separation of Flavor Components from Yunnan Tobacco Extract

分子蒸馏在云烟萃取物分离中的应用

Determination of Chemical Components of Phyllostachys heterocycla var.pubescen Superheated Bapour Extractives by GC/MS

南竹过热水萃取物成分的GC/MS分析

Preliminary Study on Antibiotic Activity of the Extract From Antarctic Actinomycete NJ-F2

南极放线菌NJ-F2萃取物的抗菌活性初步研究